The Seiko 5 line was established in the 1960s as a reliable
The listing includes both movement and back case images
The slim 37 mm stainless steel case with integrated lugs balances subtlety and presence
This model captures both the functional precision of quartz engineering and the timeless appeal of vintage Swiss watchmaking
The back has multiple notches around the edge and shows normal surface marks from age and previous opening
Seiko Bell-Matic, Ref. 4006-6031, Cal. 4006, Men’s Dress Vintage Watch, 1972 Marvin The Seiko 5 line wasVintage Seiko Bell Matic Dress Vintage Watch from 1972 with a stainless steel case, automatic movement Cal. 4006, and a refined silver sunburst dial featuring an inner alarm ring a rare collectible for sale. Seiko Bell Matic 1972 First impression 4006 6031 The Seiko Bell Matic 4006 6031 from 1972 stands as one of the most distinctive creations in Japanese horology heritage, combining automatic timekeeping with a mechanical alarm complication. Its